| Health / Medical Topics |
Substance Use Status
A term used to describe the state or condition of substance use data. (NCI Thesaurus)
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A characterization of the relationship of a substance use conclusion beginning point in time to a reference point in time.
The day of the week substance usage began.
The date and time substance usage began.
One or more sponsor defined characters used to name substance usage data.
An identifier that describes the relative position of substance use data within a series.
The method a substance was introduced to a subject.
